Vent for tank-cars.



G. R. HARRIS.

VENT FOR TANK GAB-S.

APPLICATION FILED JULY 27, 1910.

Patented Dec.17, 1912.

WITNESSES ATTORNEY UNITED STATES PATENT OFFICE.

CLIFFORD R. HARRIS, OF WORCESTER, MASSACHUSETTS,

AND FOUNDRY COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF NEW JERSEY.

VENT Fora TANK-clans.

Specification of Letters Patent.

I Application filed July 27, 1910. Serial no. 574,163.

To all whom it may concern:

.Be it known that I, CLIFFORD R. HARRIS, residing at Worcester, Massachusetts, and being a citizen of the United States, have invented certain new and useful Improvements in Vents for Tank-Cars, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and to use the same, reference'being had to the accompanying drawings, which illustrate the preferred form of the invention, though it is to be understood that the invention is not limited to the exact details of construction shown and described, as it is obvious that various modifications thereof will occur to persons skilled in the art.

In said drawings: Figure l is a vertical central section through a vent embodying the features of thepresent invention. Fig. 2 is a view thereof partly in top plan and partly in horizontal section, fragments being broken away for clearness of disclosure.

Referring to the drawings by numerals, 1 indicates the dome cover of a tank car having a threaded opening into which is threaded a tubular neck 2 of the present improved vent; a cotter pin 3 may be passed through the portion of the neck 2 extending within the dome cover for preventing accidental loosening of the vent. The upper end of the neck 2 terminates in a throat 4 contracted by restricting walls 55 turned inwardly from opposite sides of the upper edge portions of the walls of the neck 2, the contracted throat portion 4 thus assuming the form of an elongated slot-like opening which is centrally disposed with. respect to and opens upwardly from neck 2. A hollow hood or dust guard 6 surrounds and inoloses and has its upper portion spaced above the throat 4, the lower edges of the'hood being formed with inturned flanges 77 formed integral with the hood and integral with the walls of the upper portion of the neck 2, the said flanges being formed with apertures 88 communicating between the interior of the hood and the atmosphere. Laterally disposed splash guards comprising walls 9--9 extend upwardly from and are formed integral with the outer edges of outwardly extending horizontal walls l010 which are in turn formed integral with the walls 5-5. The ends ofthe walls 9 are formed integral with the side walls of the hood 6 and their upper edges terminate in horizontallydisposed baflle walls 11 having their ends formed integral with the side walls of hood Patented Dec.1 7,1912.

ASSIGNOR TO AMERICAN'CAR I 6 and their inner edges spaced apart, the

said walls 11 bein spaced vertically above an interposed ba e plate 12,- the walls 5, 9, 10, 11 and the hood piece 6 being so arranged as to form an expansion chamber above the throat piece 4. The bafile plate 12 is horizontally disposed and lies immediately above and is spaced from the throat 4 and extends beyond the edges thereof so as to overlap the planes of-the walls 5,-the plate 12 being formed intermediate its edges, preferably midway of its 'Widthwith an upstanding ridge 13terminating just short of the planes of the inner edges of the walls 11, and substantially midway between said edges. The ends of the plate 12 and ridge 13 are formed integral with the walls of the hood 6.

Preferably, approximately midway of the length of each of the openings 8, a cross web 14 is provided, formed integral with and connecting the side walls of the hood 6 and the respective portion of the flange 7 thereof with the walls 9 and 10 and with the upper portion of the wall of the neck 2.

Upstanding from the central portion of the hood 6 is preferably a polysided or nutlike extension 15 adapted to receive an operating tool for threading. thevent into place or disconnecting the same. Thus the tubular neck 2 is provided with an open vent or way from the inner end out to the atmosphere, but such way is suflieiently tortuous to insure against the splashing of liquid from. within the tank while allowing free discharge of gases.

The structure is preferably cast, and the walls, baflles and hood provide repeated means for guarding the passage from the throat to openings 8 for insuring against es-- cape of liquid while providing a free, open vent for air and gases,

the passage leading upwardly from throat 4, being divided and passing about the longitudinal edges of baffle plate 12, at each side thereof, and meeting again between the inner edges of walls 11, and then dividing again within the hood 6 and extending in opposite directions over walls 11 and outside of walls 9, and down to the openings 8.

The walls of the neck 2 near the upper end thereof in being restricted to produce the throat 4., are curved inwardly so as to tend to throw down any liquid splashing up in the bore of the neck, the walls 10 extending abruptly horizontally outwardly from and at opposite sides of the throat 4c,

- and the walls 9 rising vertically from the outeredges of the walls 10. The bafile plate A 12 is horizontally disposed and has flat faces parallel to the flat faces of the walls 10 and 11 and at right angles to the flat faces of the walls 9.

, To comply 'with M. C. B. regulations, where a frangible lead disk is required, I provide a nut 15 threaded on to the inner end of neck 2 and having the inwardly turned, annular shoulder 16 adapted to engage the edges of frangible disk 17 and hold I the same against the lower end of neck 2.

throat and baflle, and having a passage leading from the throat to the atmosphere. 2. A vent for tank cars comprising a tubular neck, a baflle across the upper end thereof, spaced walls inclosing said bafiie, and a hood coverin and inclosing the upper end of said nec and covering and inclosing said bafile, and having a passage baflle extending leading from the neck to the atmosphere, and a frangible disk in said neck.

3. A vent for tank cars comprising a tubular neck having an upwardly opening throat restricted to a slot-like opening, a lengthwise of said openmg, a wall upon each side of said baflle, and a hood covering the throat, said hood providing an independent passage past each of said wlalls leading from the throat to the atmosere. a p 4:. A vent for tank cars comprising a tubular neck,-walls outstanding horizontally from the upper end of the neck, vertical walls rising from the outer edges of said outstanding walls, inwardly turned walls extending from the upper edges of said vertical walls, a bafiie plate disposed between the inwardly turned walls and said outstanding Walls, and spaced from all of said walls for leaving passages from the neck about the baflie, the inner edges of the inwardly turned walls being spaced for forming a passage communicating with said passages, anda hood inclosing all of said walls and having a passage communicating with the last mentioned passage and extending to the atmos here.

5. vent for tank cars comprising a tubular neck, outstanding walls connected therewith at the upper end thereof, upstanding and inwardly turned walls connected with said outstanding walls, a bafiie plate substantially inclosed by said Walls and disposed in the line of the neck and acrossthe discharge of the upper end thereof,-said walls being spaced from said baffle for leaving passages about the battle, and a hood inclosing all of said walls and extending below said outstanding walls, and having a passage communicating with the passages about the baflie plate and extending to the atmosphere at a point below the outstanding walls.

6. A vent for tank cars comprising a tubular neck having a restricted throat at its upper end, outstanding horizontal walls connected with the neck at the point of the throat, upstanding walls connected to the outer edges of the outstanding walls, inwardly turned walls connected to the upper edges of the upstanding walls, all of said walls having flat faces, a bafiiedisposed between and substantially inclosed by said walls and having flat faces substantially parallel to the flat faces of the outstanding and inwardly turned walls, said baffle being spaced from said walls for leaving passa es from the throat about the bafile, and a ood inclosing all of said walls and having a passage communicating with the first mentioned passage and extending to the atmosphere.

7. A vent for tank carscomprising a tubular neck having a restricted throat at its upper end, outstanding horizontal walls connected with the neck at the point of the throat, upstanding walls connected to the outer edges of the outstanding walls, inwardly turned walls connected to the upper edges of the upstanding walls, all of said walls having flat faces, a baflle disposed between and substantially inclosed by said walls and having fiat faces substantially parallel to the flat faces of the outstanding and inwardly turned walls, said bafile being spaced from said walls for leaving passages from the throat about the baflle, a ridge upstanding from the bafile in a plane between the planes of the inner edges of the inwardly turned walls, and a hood inclosing all of said walls and havingza passage communicating with the first mentioned passage and extending to the atmosphere.

8. A vent for tank cars comprising a tubular neck having a restricted throat, a battle plate lying across and spaced above the throat, walls extending from the throat past and spaced from each edge of the baffle plate passage about the baffle plate, and a hood inclosmg all of said walls and spaced at points from the walls for forming passages communicating with the passage between the inwardly turnedwalls, the last mentioned passages extending downwardly past said walls' and communicating with the.atmosphere.

. throat restricted bafile extending lengthwise of sai 2 and spaced therefrom,

' said bafile and provided with a constricted outlet, a hood inclosing and communicating with said chamber and with the atmosphere.

10. A vent for tank cars comprising a tubularneck, a bafile across the upper end thereof, a chamber communicatin with the atmosphere and inclosing said afile and forming passages on o posite sides of said bafile and a frangible d isk below said bafile.

11. A 'vent for -tank cars comprising as an integer, a *tubular .neck portion having a constricted slot-like throat, an enlarged chamber communicating with said neck and having a restricted slot-like opening, a baflle plate spaced'from the, walls of said chamber above said throat slot and provided with an upstandin flange intermediate the width 0 said ba e plate and a covering and protec ting hood in communication with said chamber and the atmosphere.

12. A vent for tank cars comprising a tubular neck constricted at its outlet, an expansion chamber communicating with said outlet and provided with an angular centrall disposed baflle and with a constricted slotike opening, an inclosin hoodhaving segmental-like openin s to t eatmosphere' communicating with t e expansion chamber outlet.

13. A vent for tank cars comprising a tubular lneck constricted at its outlet, an expansion chamber communicating with said outlet of the tubular neck and provided with an angular centrally disposed battle and with a constricted slot-like opening an inclosing hood having a recess above said expansion chamber outlet and having seg- -mental-like openings to the atmosphere communicating with the expansion chamber outlet.

14. A vent for tank cars com risin a tubular neck constricted at its out et, a rangible disk secured thereto at the inlet of said tubular neck, an ex ansion chamber communicating with sai outlet of the tubular neck and provided with an angular centrall disposed baflle and with a constricted slot- 'ke'opening and an inolosing hood having segmental-like openin s to the atmosphere communicating wit the expansion chamber outlet.

In witness whereof I havelhereunto set my hand in the presence of two witnesses. CLIFFORD R. HARRIS. Witnesses:

Ron'r. W. Morrm'r, B. J. WEISMER.

Washington, D. O.

' copies of this patent may be obtained for five cents each, by addressing the Commissioner of ratents, 

